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EFFECTS OF TURBULENCE AND ELECTROHYDRODYAMICS ON THE PERFORMANCE OF ELECTROSTATIC PRECIPITATORS
Citation:
Yamamoto, T. EFFECTS OF TURBULENCE AND ELECTROHYDRODYAMICS ON THE PERFORMANCE OF ELECTROSTATIC PRECIPITATORS. JOURNAL OF ELECTROSTATICS 22(1):11-22, (1989).
Impact/Purpose:
Information.
Description:
Numerical simulations of the turbulent diffusion equation coupled with the electrohydrodynamics (EHD) are carried out for the plate-plate and wire-plate ESPs. The local particle concentration profiles and fractional collection efficiencies have been evaluated as a function of three dimensionless parameters: the electric Peclet number (Pe), the EHD number (NEHD), and the reduced particle migration velocity, ε*. The collection efficiency for the wire-plate ESP is significantly lower than that for the plate-plate ESP. For the wire-plate ESP, when the turbulent diffusion coefficient is less than 1×10−3 m2/s, the collection efficiency is not affected by any turbulence or EHD level. However, when the turbulent diffusion coefficient exceeds this critical value, the collection efficiency drops sharply, regardless of the values of the EHD number and particle migration velocity. The critical turbulent diffusion coefficient of the plate-plate ESP is higher, 5×10−3m 2/s, indicating that the collection efficiency is less sensitive to turbulence. The results emphasize the importance of controlling the quality of flow characteristics in the ESP.
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EFFECTS OF TURBULENCE AND ELECTROHYDRODYAMICS ON THE PERFORMANCE OF ELECTROSTATIC PRECIPITATORS (PDF, NA pp, 2106 KB, about PDF)JOURNAL ACCESS
